Chapter 3. Operation; Sdm 309/M1200P Front Panel; General; Led Indicators - Comtech EF Data SDM-309B Installation And Operation Manual

3.1 SDM 309/M1200P Front Panel

3.1.1 General

The following is a Step by Step explanation and procedure for operating the SDM 309B
modem, hereafter referred to as the modem, with an internal IBS channel unit. The
complete front panel operation is described below.
The Modem front panel (Figure 3-1) provides the local user interface which is necessary
to configure and monitor status of the satellite modem. The front panel features a sixteen
character, two line LCD display and six key key-pad which provides for sophisticated
functions, yet is easy to use. Eight LED indicators are also present on the front panel to
provide overall status at a glance. All functions are accessible at the front panel by
entering one of five predefined 'sELECT" categories or levels: Configuration
(CONFIG), Monitor, Faults, Stored Faults (StFaults), and Utility.

3.1.2 LED Indicators

General modem status and summary fault information is indicated by eight LED's on the
front panel. The indicators are defined as follows:
Transmit (Red LED)
Receive (Red LED)
Common (Red LED)
Stored (Red LED)
Power On (Green LED)
Transmitter On (Green LED)
Carrier Detect (Green LED)
MN/U-SDM309B Rev. #
Chapter 3.
OPERATION
Faults
Indicates that a Modulator fault or a Transmit Interface
fault condition exists.
Indicates that a Demodulator/Decoder fault or a Receive
Interface fault condition exists.
Indicates that a common equipment fault condition exists.
Indicates that a fault has been logged and stored. The
fault may or may not be active.
Status
Indicates power is applied to the modem.
Indicates that the transmitter is currently on. This indicator
reflects the actual condition of the transmitter, as opposed
to the programmed condition.
Indicates that the decoder is locked.
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